It looks like you’ve been getting all kinds of spots for a while. Are you feeding it anything? Or did you get to week 6 and decide to flush for 2 weeks because the website said it’s an 8 week strain?
Yeah, I've been feeding it nutrients. Micro, grow, Bloom and calcium magnesium. Feed them everyday with pH balanced water. Always aim between 6.2-6.5. this is the feedings per week from week 8 till now week 11. The ratios are in milliliters for a gallon of water.
Had this pop up on my Norther Lights run, had been letting my pH drift at the high end for several days (6.3-6.4). Pulled the pH back to a max of 6.1 and it stopped progressing immediately.